Category: Adaptation

Darwin’s Finches

March 10, 2017 By arne hendriks Off

If the human species embraces a desire to become smaller, as it embraced the desire to become taller in the past and present, then it is of some interest to know how fast this desire could influence human size and if desire alone is enough.…

Bumblebee Megacolony

November 3, 2016 By arne hendriks 0

A study by the Universidad Nacional Autónoma de México explored the effects of food availability on the colony and body size of 21 bumblebee taxa. Not surprisingly according to the study, the size of a colony is a direct result of food availability. The more…

3rd Trimester Foetal Hunger

July 14, 2016 By arne hendriks 0

Perhaps pregnant women in their last trimester shouldn’t eat too much. In the winter of 1944/45 the Second World War resulted in a severe famine in the Netherlands. The Dutch survived on as little as 30% of their daily needed caloric intake. It is a…

PARs in the Womb

May 28, 2013 By arne hendriks 0

The Incredible Shrinking Man is interested to know what consequences can be expected for human height if nutrition availability after birth doesn’t match predictions by the fetus on the basis of its prenatal environment. During pre-birth development fetuses prepare for the world outside by using the…

Hot Adaptations

October 8, 2012 By arne hendriks 1

Palaeontologists studying fossilised horses have found a direct link between the size of mammals and climate change. According to Dr. Jonathan Bloch, curator of the Florida Museum of Natural History, as temperatures go up size goes down, and vice versa. Bloch: ‘Horses started out small 56…

Rete Mirabile

October 1, 2012 By arne hendriks 0

Lucia Zarate was a famous 19th century dwarf and, at just over 2 kg, the lightest adult person ever to be recorded. Her untimely death when she got trapped in a snowstorm acts as a warning. The smaller body is much more sensitive to external…

Monkey Lungs

September 11, 2011 By arne hendriks 2

According to the flamboyant geneticist and evolutionary biologist  J.B.S. Haldane, comparative anatomy is largely the story of the struggle to increase surface in proportion to volume. For human lungs this meant that as we grew larger, in order to bring enough oxygen to all parts…

Is Global Warming Shrinking our Brain?

August 28, 2010 By arne hendriks 2

This study by Jessica Ash and Gordon G. Gallup Jr. suggests that human cranial capacity as an indicator of brain size grew dramatically during our evolution, and that variations in global temperature as well as progressive shifts toward global cooling account for as much as…